Undesirable auto set hot keys on buttons

abarmotov

In this example output is: QKeySequence("Alt+H")
Opensuse 42.2, qt 5.6.1
Is it bug or i can disable this behavior ?

int main(int argc, char *argv[])
{
   QApplication app(argc, argv);
   QPushButton *b = new QPushButton("Hello");
   b->setShortcut(QKeySequence("Ctrl+Q"));
   QObject::connect(b, &QPushButton::clicked, [b]() {
       qDebug() << b->shortcut();
   });
   b->show();
   return app.exec();
}

But If this example builded with manually builded qt 5.6.1 from source, then it works fine: hot key is "Ctrl+Q".
Is it some configuration in system qt to auto assign hot keys ?

SGaist

Hi,

Pretty surprising indeed... What is ~~Ctrl + H~~ Alt + H used for in your system ?

abarmotov

Hi
Hot key "Alt+H" is nothing in my system
"Alt+H" is set because for letter "H" in word "Hello", qt auto set this and understroke it with alt pressed.
And if i put many buttons on form - qt try to set for all of them hot keys with "Alt"
This is only for system qt, and i dont understand why.

SGaist

I didn't realise before but Alt+H looks like an accelerator. Might be a silly question but are you using "&Hello" in your code ?

abarmotov

No "&Hello" in code, no any "&" symbols in any buttons name.
But accelerator is set - that is strange.

Same affect i see in any qt applications in suse linked with sustem qt: kcalc, system settings ...
I guess this some sort of configuration or settings for this behavior in system, but dont know where it and why it not affected on manually build qt and app.

SGaist

That's something to check with the SUSE folks.

abarmotov

@SGaist said in Undesirable auto set hot keys on buttons:

That's something to check with the SUSE folks.

maybe, but how suse can effect on qt libs and set some hot keys if they not in my code ?

upd: tested this app on xubuntu/kubuntu 16.04 (same machine, same qt 5.6.1, same binary)
login as xubuntu - hot key is my "Ctrl+Q" - ok
login as kubuntu - hot key is not my "Alt-H" - not ok
So KDE(plasma, some else) can force change my hotkeys for my buttons in my app ?
How qt allow this ?

upd2: found solution http://stackoverflow.com/questions/32688153/how-to-disable-automatic-mnemonics-in-a-qt-application-on-kde
and bug is exists

SGaist

Thanks for sharing your findings !